Utility, ODI, and EQ-VAS of LLIF and PLIF preoperatively and at the 2-year follow-up.
| Parameters | LLIF (n = 30) | P | PLIF (n = 50) | P | 2-y Comparison | ||
| Preoperative | 2 y | Preoperative | 2 y | ||||
| Utility | 0.68 ± 0.20 | 0.86 ± 0.13 | < 0.001a | 0.66 ± 0.17 | 0.88 ± 0.09 | < 0.001a | 0.501 |
| ODI | 39.67 ± 22.62 | 22.54 ± 16.16 | < 0.001a | 39.49 ± 15.11 | 24.19 ± 10.77 | < 0.001a | 0.584 |
| EQ-VAS | 63.50 ± 17.28 | 77.33 ± 17.31 | 0.004a | 64.70 ± 15.30 | 75.90 ± 15.11 | < 0.001a | 0.698 |
Abbreviations: EQ-VAS, EuroQol Visual Analog Scale; LLIF, lateral lumbar interbody fusion; ODI, Oswestry Disability Index; PLIF, posterior lumbar interbody fusion.
↵a Significant at a P value of less than 0.05. Statistical analysis using Student’s t test for both unpaired and paired t tests.